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公开(公告)号：US09429965B2
公开(公告)日：2016-08-30
申请号：US12611853
申请日：2009-11-03
CPC分类号： H05B33/0815 , G05F1/461 , G05F1/565 , H02M3/04 , H05B33/0827 , H05B33/0845
摘要： A multiple chip voltage feedback technique allows multiple strings of LED's and current sinks to be efficiently powered by a DC-to-DC voltage converter within an appliance. A connected series of differential amplifiers or multiplexers are used to monitor the voltages between the connected LED's and the current sinks, progressively determine the lowest voltage, and then feed the lowest voltage back to the voltage converter. The DC-to-DC voltage converter monitors this lowest voltage and adjusts its output in order to ensure that the strings have adequate voltage with which to function, even as the LED's have different forward voltages and the strings are asynchronously enabled and disabled.
摘要翻译： 多芯片电压反馈技术允许多个LED串和电流吸收器由设备内的DC-DC电压转换器有效地供电。 使用连接的差分放大器或多路复用器系列来监视连接的LED和电流吸收器之间的电压，逐渐确定最低电压，然后将最低电压馈送到电压转换器。 DC-DC电压转换器监控这个最低电压并调整其输出，以确保串具有足够的电压，即使LED具有不同的正向电压，并且串是异步启用和禁用的。
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公开(公告)号：US20130293208A1
公开(公告)日：2013-11-07
申请号：US12611853
申请日：2009-11-03
IPC分类号： G05F1/46
CPC分类号： H05B33/0815 , G05F1/461 , G05F1/565 , H02M3/04 , H05B33/0827 , H05B33/0845
摘要： A multiple chip voltage feedback technique allows multiple strings of LED's and current sinks to be efficiently powered by a DC-to-DC voltage converter within an appliance. A connected series of differential amplifiers or multiplexers are used to monitor the voltages between the connected LED's and the current sinks, progressively determine the lowest voltage, and then feed the lowest voltage back to the voltage converter. The DC-to-DC voltage converter monitors this lowest voltage and adjusts its output in order to ensure that the strings have adequate voltage with which to function, even as the LED's have different forward voltages and the strings are asynchronously enabled and disabled.
摘要翻译： 多芯片电压反馈技术允许多个LED串和电流吸收器由设备内的DC-DC电压转换器有效地供电。 使用连接的差分放大器或多路复用器系列来监视连接的LED和电流吸收器之间的电压，逐渐确定最低电压，然后将最低电压馈送到电压转换器。 DC-DC电压转换器监控这个最低电压并调整其输出，以确保串具有足够的电压，即使LED具有不同的正向电压，并且串是异步启用和禁用的。
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